Dough-kneading machine



ent av. 27 we.

theater nnns'ren'r, Giana w noueH-xnmme macr'rmn.

Application filed A il 5, 1928;, Serial No. 257,698, and in Germany February 21, was.

' meanwhile to be taken to prevent the scraper fiom coming into conflict with the moving 1% kneadin arm.

The ject of the present invention is to provide mechanical means for scraping the trough, and the invention consists in the provision of a scraper which is shaped in con- 13 formity with the trough wall and carried on the machine frame by a double-armed lever one arm of which bears against a screw spindle whereby the scraper can be applied to the trough with greater or less force not only for 2 scraping but also for braking purposes.

Fig. 1 of the accompanying drawing represents a side view of the machine, partly in section, r

Fig. 2, a part section of the same on an en- 2 larged scale, and V Fig. 3, a top view of'the scraper and its Support c The heading machine comprises a trough a which revolves in known manner about a so kneading arm which is itself kept in motion. According to the invention a scraper is provided which is carried by a double-armed lever in and which is bent inconformity with the wall of the trough, as best shown in Fig.

as 2. The scraper has' a lug i whereb it is mounted on a detachable pivot pin g eld in a fork The latter is either integral with or connected to a supporting bar 0 whereby it is secured through the medium of screws to d and e to the machine frame I). A bracket m on the bar a carries a screw-spindle n which bears against the upper, short arm-of the lever h and serves as a means for applying thelatter with greater or less force against the trough.

The supporting bar '0 also has a pivoted latch Z which is. adapted to be turned in front,

of the head of the pivot pin 9 for retaining the latter normally in position. There is a I Z-shaped plate at the free end of the-latch. One 'end member ofthis plate isadapted to bear against the headof the pin so as to sup;

port the latch in 160m position while the other end member is adapted to serve as an operating handle. This arrangement allows the latch to be easily turned aside so as to clear the pin when the latter is to be detached for the removalof' the scraper.

The scraper is preferably'composed, as shown in Fig.3, of two flat bars which are clamped together over one or more strips 70 constituting the scraping edge, one of the bars forming part of the lever h. The strip or strips 70 are made of wood, celluloid or other material which does not injure the trough surface. The scraper is, as shown in Fig. 3, held at an angle to the trough surface and set against the travelling direction of the trough. Those edges of the bars from between which the scraper strips project are preferably bevelled so as to prevent contact with the trough at one side of the scraper strip and prevent clogging up of the scraper at the other side.

. The screw-holes in the bar 0 for the screws (Z and e are preferably elongated so as to allow the position of the scraper relative to the trough wall to be adjusted. The fork f may be so connected to the bar a as to allow its angular positionto the bar, and thus the angular position of the scraper to the trough, to be varied. I V

The scraper, applied by means of the screw spindle n, can be conveniently used as a brake for the machine, it being thus possible to dispense with the usual braking mechanism.

I claim:

' 1. In a dough-kneading machine, the combination with a machine frame and with a revolving trough, of a' brake in the form of a scraper arranged in the trough and shaped in conformity with the wall thereof, a doublearmed lever pivoted to the machine frame and carrying said scraper, and. a screw spin-.

dle supported by the machine frame and bearing against one arm of said lever for applying the scraper t0 the trough with greater or less force according to its adjustment;

. 2." A structure as claimed in claim 1 wherein .the. pivotal support for the lever comprises a bar secured to the machine frame, '9, lug on the lever, a fork on the bar adapted to receive said lug, a detachable pivot pin passing through the fork and through the allow of being use for locking the pivot pin in position.

3. A structure as claimed 1n claim 1 wherei in the pivotal support for the lever comprises a bar secured adjustably to the machine frame, a lug on the lever, a fork adapted to receive said lug secured adjustably to said arm, a detachable pivot pin passing through the fork and through the lug, and a latch 10 pivoted to the bar so as to allow of being used for locking the pivot pin in position.

4. A structure as claimed in claim 1 where in the scraper is composed of two flat metal bars which are clamped together over a pro- 15 jecting strip of material which is softer than that of the trough.

. FRIEDRICH KOCHY. 

